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Phoenix [80]
3 years ago
15

please help, I really don't understand how I work out the answer to this question and my teacher didn't teach it to us very well

:/ ​

Mathematics
2 answers:
Tom [10]3 years ago
7 0

Answer:

7x+5x+18=90

12x=90-18

12x=72

x=6

Step-by-step explanation:

pythagoras law

KATRIN_1 [288]3 years ago
7 0

Answer:

Smallest angle =

7x

7 \times 6 \\  = 42 \:  \: degrees

Step-by-step explanation:

7x + 5x + 18 = 90 \\ 12x = 90 - 18 \\ 12x = 72 \\  \frac{12x}{12}  =  \frac{72}{12}  \\ x = 6 \\  \\ 7x  \\ 7 \times 6 \\  = 42 \:  \: degrees \\  \\ 5x + 18 \\ 5 \times 6 + 18 \\ 30 + 18 \\ 48 \:  \: degrees \\

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